Meaning: せいげんn. (Kanji=制限) restriction, restraint, stint, limitation, circumscriptionn. (Kanji=正弦) sine (in right triangles) ratio of the length of the side opposite an acute angle to the length of the hypotenuse (Trigonometry)n. (Alt=せいごん, Kanji=誓言) attestation, attest, testimony under oath, certifyadj. (Kanji=制限する) restrictive, limiting, serving to restrict, pertaining to a limitation or restrictionv. (Kanji=制限する) restrict, limit, regulate, constrict, curbv. (Kanji=誓言する) attest, confirm